Finding duplicate images

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Over the years and several laptops, tablets, phones and PCs later, I have copied and recopied images, stored them for someone else, and generally ended up with a right mess of duplicates all over the place and I want to sort it out. I am better at organising now and don't get the problem anymore but there is shedload of crap lying around on my hard drive from years ago.

Is there any software that will find duplicates on my hard drive and give me a nice-to-view list through which I can trawl and delete accordingly? I don't really trust some of the free duplicate finders like CCleaner etc. and am willing to pay for decent software.
 
Treesize Pro will find duplicate files, as well as list the largest files on your hard drive there is a 30 day trial available
 
I tried gimini some years ago.... current link appears to be here https://www.duplicatephotosfixer.com
Went here but my Malwarebytes throws this download out as PUP so I've not done that
Treesize Pro will find duplicate files, as well as list the largest files on your hard drive there is a 30 day trial available

+1 for Treesize Pro (y)
I'll have a look at Treesize.

I am currently running a copy of Awesome Duplicate Photo Finder and while it is doing the job in that when it finds duplicates it actually shows you the pictures, not just the filename, it is ridiculously slow as at the moment it is comparing over 8000 photographs and 1100 compares so far has taken 20 minutes. It starts off fast then gets slower as the number increases. I appreciate it is doing a lot of work as it is comparing the image not the filename but I'm concerned that the longer it runs, the slower it will go and will eventually take weeks to complete. I'll run it overnight and see what happens.

EDIT: As it turns out, the program must have picked up speed for some reason and finished in about an hour, finding over 350 duplicates. It took me about twenty minutes to go through them deleting the relevant file and now the job is done. Seems my PC wasn't in as much of a mess as I thought. I let it find exact image copies so I've got rid of absolute duplicates, when I've got time I'll run it again and let it find 'similar' images and that'll let me get rid of pictures that only vary by a little bit. All-in-all, Awesome Duplicate Photo Finder has worked pretty well and I'd recommend it.
 
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https://www.mjbpix.com/photomove-2-0-free/ does it, and sorts them into folders at the same time.

I find the reason I have duplicates is that I have stored whole folders in different places at different times, now I have one destination, sorted in to camera model, and within the model into years.

With the paid version (only a few £) you have more options, like having a folder for all files that don't have a date, and another folder for those missing EXIF data.

Another reason I like this is that once you have the destination set up, you can plug in old hard drives, and just let it check for images and move and sort them to the same destination.

As it compares file size and date and camera model as well as file name, it overcomes the Windows headache or replacing files with the same file name if you tell it do do so without checking, which is an issue if you have more than one camera from the same manufacturer and the number series is duplicated.
 
I'm in the process of trying to de-duplicate my wife's laptop hard drive using Treesize Pro. She is a crafter and takes no care about where she stores files that she downloads from various crafting sites. There are 15,000+ files including jpg, pdf, docx and several other file types.

Treesize Pro took about 1 minute to search for duplicates based on file name and size. It found more than 8,000! It's going to take days to sort through this lot and decide which version of each one to keep. I guarantee that whatever I end up with will be wrong :(
 
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